X0508 4 2025-12-15 0 0001093691 PLUG POWER INC PLUG 0001893770 Crespo Jose Luis C/O PLUG POWER INC. 125 VISTA BOULEVARD SLINGERLANDS NY 12159 0 1 0 0 See Remarks 1 Common Stock 2025-12-15 4 P 0 37300 2.34 A 307332 D Common Stock 61300 I By 401(k) Plan This purchase was effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025. The Reporting Person holds 61,300 shares of common stock in Plug Power Inc.'s 401(k) plan. The information in this report is based on a plan statement as of December 17, 2025. President & Chief Revenue Officer /s/ Gerard L. Conway, Jr., Attorney-in-Fact 2025-12-17